我设置了ckan 2.7.2进行开发。我遇到问题，服务器返回错误500每次提交新的或更新的数据（组，组织，数据集）。这是ckan-default.error.log
的输出[Tue Oct 31 23:05:58.261643 2017] [wsgi:error] [pid 29258:tid 140278908057344] 2017-10-31 23:05:58,261 INFO [ckan.lib.base] /group render time 0.110 seconds
[Tue Oct 31 23:05:58.543091 2017] [wsgi:error] [pid 29257:tid 140278908057344] 2017-10-31 23:05:58,542 INFO [ckan.lib.base] /api/i18n/en render time 0.003 seconds [Tue Oct 31 23:05:58.543759 2017] [wsgi:error] [pid 29257:tid 140278908057344] [remote 127.0.0.1:34363] mod_wsgi (pid=29257): Exception occurred processing WSGI script '/etc/ckan/default/apache.wsgi'.
[Tue Oct 31 23:05:58.543801 2017] [wsgi:error] [pid 29257:tid 140278908057344] [remote 127.0.0.1:34363] Traceback (most recent call last):
[Tue Oct 31 23:05:58.543822 2017] [wsgi:error] [pid 29257:tid 140278908057344] [remote 127.0.0.1:34363] File "/usr/lib/ckan/default/src/ckan/ckan/config/middleware/__init__.py", line 136, in __call__
[Tue Oct 31 23:05:58.543861 2017] [wsgi:error] [pid 29257:tid 140278908057344] [remote 127.0.0.1:34363] return self.apps[app_name](environ, start_response)
[Tue Oct 31 23:05:58.543875 2017] [wsgi:error] [pid 29257:tid 140278908057344] [remote 127.0.0.1:34363] File "/usr/lib/ckan/default/lib/python2.7/site-packages/paste/cascade.py", line 130, in __call__
[Tue Oct 31 23:05:58.543894 2017] [wsgi:error] [pid 29257:tid 140278908057344] [remote 127.0.0.1:34363] return self.apps[-1](environ, start_response)
[Tue Oct 31 23:05:58.543905 2017] [wsgi:error] [pid 29257:tid 140278908057344] [remote 127.0.0.1:34363] File "/usr/lib/ckan/default/src/ckan/ckan/config/middleware/common_middleware.py", line 61, in __call__
[Tue Oct 31 23:05:58.543929 2017] [wsgi:error] [pid 29257:tid 140278908057344] [remote 127.0.0.1:34363] return elf.app(environ, start_response)
[Tue Oct 31 23:05:58.543969 2017] [wsgi:error] [pid 29257:tid 140278908057344] [remote 127.0.0.1:34363] File "/usr/lib/ckan/default/lib/python2.7/site-packages/paste/registry.py", line 379, in __call__
[Tue Oct 31 23:05:58.544030 2017] [wsgi:error] [pid 29257:tid 140278908057344] [remote 127.0.0.1:34363] app_iter = self.application(environ, start_response)
[Tue Oct 31 23:05:58.544049 2017] [wsgi:error] [pid 29257:tid 140278908057344] [remote 127.0.0.1:34363] File "/usr/lib/ckan/default/lib/python2.7/site-packages/repoze/who/middleware.py", line 117, in __call__
[Tue Oct 31 23:05:58.544073 2017] [wsgi:error] [pid 29257:tid 140278908057344] [remote 127.0.0.1:34363] wrapper.finish_response(remember_headers)
[Tue Oct 31 23:05:58.544084 2017] [wsgi:error] [pid 29257:tid 140278908057344] [remote 127.0.0.1:34363] File "/usr/lib/ckan/default/lib/python2.7/site-packages/repoze/who/middleware.py", line 177, in finish_response
[Tue Oct 31 23:05:58.544110 2017] [wsgi:error] [pid 29257:tid 140278908057344] [remote 127.0.0.1:34363] write = self.start_response(self.status, headers, self.exc_info)
[Tue Oct 31 23:05:58.544134 2017] [wsgi:error] [pid 29257:tid 140278908057344] [remote 127.0.0.1:34363] TypeError: expected byte string object, value of type unicode found
我希望排除故障以解决问题。感谢